Merge pull request #9185 from terry-xiaoyu/fix_precision_of_rule_metrics

fix: set precision of counter 'max_speed' to 2 digits

apps/emqx_rule_engine/src/emqx_rule_engine.appup.src

@@ -4,6 +4,7 @@
   [{"4.3.16",
     [{load_module,emqx_rule_registry,brutal_purge,soft_purge,[]},
      {load_module,emqx_rule_funcs,brutal_purge,soft_purge,[]},
+     {load_module,emqx_rule_metrics,brutal_purge,soft_purge,[]},
      {load_module,emqx_rule_engine_api,brutal_purge,soft_purge,[]}]},
    {"4.3.15",
     [{load_module,emqx_rule_funcs,brutal_purge,soft_purge,[]},
@@ -218,6 +219,7 @@
   [{"4.3.16",
     [{load_module,emqx_rule_registry,brutal_purge,soft_purge,[]},
      {load_module,emqx_rule_funcs,brutal_purge,soft_purge,[]},
+     {load_module,emqx_rule_metrics,brutal_purge,soft_purge,[]},
      {load_module,emqx_rule_engine_api,brutal_purge,soft_purge,[]}]},
    {"4.3.15",
     [{load_module,emqx_rule_funcs,brutal_purge,soft_purge,[]},

apps/emqx_rule_engine/src/emqx_rule_metrics.erl

@@ -500,11 +500,10 @@ calculate_speed(CurrVal, #rule_speed{max = MaxSpeed0, last_v = LastVal,
                 last5m_smpl = Last5MinSamples, tick = Tick + 1}.
 
 format_rule_speed(#rule_speed{max = Max, current = Current, last5m = Last5Min}) ->
-    #{max => Max, current => precision(Current, 2), last5m => precision(Last5Min, 2)}.
+    #{max => round2(Max), current => round2(Current), last5m => round2(Last5Min)}.
 
-precision(Float, N) ->
-    Base = math:pow(10, N),
-    round(Float * Base) / Base.
+round2(Float) ->
+    round(Float * 100) / 100.
 
 %%------------------------------------------------------------------------------
 %% Metrics Definitions

changes/v4.3.22-en.md

@@ -5,6 +5,11 @@
 
 ### Bug fixes
 
+- Improve the display of rule's 'Maximum Speed' counter to only reserve 2 decimal places. [#9185](https://github.com/emqx/emqx/pull/9185)
+  This is to avoid displaying floats like `0.30000000000000004` on the dashboard.
+
+- Fix the issue that emqx prints too many error logs when connecting to mongodb but auth failed. [#9184](https://github.com/emqx/emqx/pull/9184)
+
 - Fix that after receiving publish in `idle mode` the emqx-sn gateway may panic [#9024](https://github.com/emqx/emqx/pull/9024).
 
 - "Pause due to rate limit" log level demoted from warning to notice [#9134](https://github.com/emqx/emqx/pull/9134).

changes/v4.3.22-zh.md

@@ -5,6 +5,11 @@
 
 ### 修复
 
+- 改进规则的 "最大执行速度" 的计数，只保留小数点之后 2 位 [#9185](https://github.com/emqx/emqx/pull/9185)
+  避免在 dashboard 上展示类似这样的浮点数：`0.30000000000000004`。
+
+- 修复在尝试连接 MongoDB 数据库过程中，如果认证失败会不停打印错误日志的问题。[#9184](https://github.com/emqx/emqx/pull/9184)
+
 - 修复 emqx-sn 插件在“空闲”状态下收到消息发布请求时可能崩溃的情况 [#9024](https://github.com/emqx/emqx/pull/9024)。
 
 - 限速 “Pause due to rate limit” 的日志级别从原先的 `warning` 降级到 `notice` [#9134](https://github.com/emqx/emqx/pull/9134)。